Deprecated enum syntax removed: most compiler tests

compiler/testData/codegen/boxWithStdlib/regressions/kt4262.kt

@@ -1,7 +1,7 @@
 fun <E : Enum<E>> Byte.toEnum(clazz : Class<E>) : E =
     (clazz.getMethod("values").invoke(null) as Array<E>)[this.toInt()]
 
-enum class Letters { A B C }
+enum class Letters { A, B, C }
 
 fun box(): String {
     val clazz = javaClass<Letters>()

compiler/testData/codegen/boxWithStdlib/regressions/kt6434.kt

@@ -1,5 +1,5 @@
 enum class E {
-    VALUE
+    VALUE,
     VALUE2
 }